Gas stove



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Y @Maw/Moz HubrL E. HumPhr-e] Patented liv/lar. 2Q, l9235.

STATES i?? HUBERT R. HUMPHREY, OF KLAIVIAZOO, MICHIGAN.

GAS STOVE.

Application led September To all /w/Lom it may concern.'

Be it known that l, HUBERT lt. .HUM- rrinnr, a citizen of the llnitedStates, residing at the city and county of Kalamazoo, State oflilichigan, have invented certain new and useful Improvements in GasStoves, oi which the following is a specification.

This invention relates to improvements in gas stoves. The main objectsof this invention are:

First, to provide an improved operating means for multiple burner gasstoves in which gas may be admitted to all or a part of thc burnermembers as desired.

Second, to provide in a gas stove of this type an improved. ignitingmeans.

Third, to provide an improved igniting means for gas stoves havingradiating elements of foraminous earthy material.

Fourth, to provide an improved valve actuating and ignitino' means forgas stoves which is simple in structure and at the same time veryeiicient.

Further objects, and objects relating to structural details, willdefinitely appear from the detailed description to follow.

l accomplish the objects of my invention by the devices and meansdescribed in the following specification. The invention is clearlydefined and pointed out in the claims.

structure which is a preferred embodiment of my invention is clearlyillustrated in the accompanying drawings, forming a part of thisapplication, in which:

Fig. l is a. front elevation of a gas stove embodying the features of myinvention, parts being broken away and other parts omitted to illustratefeatures of the invention; other parts being shown conventionally forconvenience in illustration.

Fig. Il is an enlarged detail fragmentary view of the burner and theburner valve operating means partially in section on line ing means, theburner manifold being shown partially in horizontal section.

Fig. Vl is a detail section on a line corresponding` to line 6 6 of Fig.ll, showing details of the valve actuating mechanism.

F ig. Vll is a detail section through the valve on a line correspondingto line 7 7 of Fig. lV.

Fig. Vlll is a. detail section through the valve on a. linecorresponding to line 8 8 of Fig. lV.

Fig. IX is a detail vertical section on a line corresponding to line 9 9of Fig. l, showing the arrangement of the igniter elements on thefirebaclr.

Fig. X is a detail horizontal section on a line corresponding to line10-10 of Figs. l and X.

Fig. Xl is a diagrammatic viewY showing the electrical connections forthe igniter and the valve actuating means.

ln the drawings similar reference characters refer to similar partsthroughout the several views, and the sectional views are 'taken lookingin the direction of the littlearrows at the ends of the section lines.

Referring to the drawings, 1 represents the .frame or body of the stove,2 the fire back which is arranged the-rein, and 3 the foraminatedtubular radiating elements which are disposed in front of the iirehack.

rlhe iirebacl is preferably provided with an overhang 4 at its upperend, the upper ends of the radiating elements being adjacent to andunder this overhang, as shown in lX.

The burner .is of the general character of that shown in my applicationfor Letters Patent, filed Aug. 3. 1920, Ser. No. 400,948, and consistsof a plurality of independent burner tubes or members 5 each operativelyassociated with one of the radiating elements The gas delivery nozzles 6are mounted upon the manifold 7 so as to deliv r to the lower ends ofthese tubes. The manifold. has va chamber 8 with which a part of thenozzles dare connected and a chamber 9 vwith which the remaining tipsare connected.

The casing has ports 12 connecting with the manifold chamber. The valve1B is rotatable in the casing and is provided With a longitudinal boreor passage 14 communieating with the supply pipe. The valve has ports 15and 16,-See Figs. IV, VH and VIH, adapted to be brought into registerwith the casing ports 12. The port 16 is elongated so that while bothports are simultaneously opened the port 15 is cut o therewith;

prior tothe closing of the port 16. This delivers gas to all of theburner members when the valve is actuated to open the same. The secondactuation cuts olf a part of the burner members and a third actuationcuts off all of the burner members.

4In the structure illustrated this is accomplished by 'means of anelectromechanical mechanism consisting of an electromagnet 17, thearmature 18 of which is connected to the pawl carrier 19 by means of thelink 20. A vcoiled spring 21 returns the armature when the current iscut ofi".

The pawl carrier 19 is rotatably mounted on the stein 22 carrying aSleeve 23 rotatable On this slecveis a ratchet wheel 24 and a stop wheel25.

in* engagement with the ratchet wheel by the spring 27,-see Fig. VI.

The link 2() has an extension 28 coacting with the stop `ratchet 25preventing overthrowr of the valve. The valve stem is also provided witha hand wheel 29 so that the valve may be manually manipulated ifdesired,-see.Fig. IV.

Vith this arrangement, on each actuation of the electromagnet the valveis ad- 'the burner members.

I arrange an igniter, designated generally by the numeral 30, in arecess 31 in the fireback adjacent the upper ends of the radiatingelements and below the overhang l of the ireback. This igniter, in thestructure illustrated, is a resistance wire wound upon v a suitablecore. The igniter is connected by the Wires 32 in series with theelectromagnet, as shown diagrammatically in Fig. XI, the circuit 33being controlled by a switch 34 automatically opened by the spring 35 sothat when the switch 34 is held closed by the operator the armature isactuated and current is supplied to the igniter,y the currentbeingsupplied as long as the switch is held open, it being automaticallycut off upon releasingthe switch. This enables the operator'to maintainthe current on the igniter until the same is heated suliiciently tolight theses, f i

By positioning the igniter as I havev described, the .gas 'is'turn'ed onland flows up The pawlv 261is of- -v lthe reciprocating type -being heldyieldingly through the radiating elements below the ireback and asuitable igniting mixture is secured so that the burners are lightedwithout producing an objectionable explosion such as is likely tov occurwhere an attempt .is made to light the burners instantly upon turning onthe gas or at the burner tips, the slight lapse of time required for theigniter to become incandescent being suficient for the gas to reach thetop oi' theradiating elements and to form a proper lighting mixture.

. I have illustrated and described my -improvements in an embodimentwhich I find highly satisfactory. I have not attempted to illustrate or.describe certain modifications and adaptations whichI contemplate as Ibelieve the disclosure made will enable those skilled in the art towhich my invention relates to embody or adapt the same as maybe desired.Y j

Having thus described .my invention, what I claim as new and desire to`secure by Letters llPatent, is:

1. In a Structure of the class described, the'combination of a ireback,radiating elements disposed at the front thereof, a burneroperatively'associated with said radiating elements, a gasy supplyvalve, an electrically controlled actuating means for said valve, and anigniter element disposed on said iirebacl andconnected to said valvecontrol means so that current is supplied to the igniter element uponthe actuation of the valve.

2. In a structure of rthe* classl described, the combination of airebacl, radiating elements disposed at the front thereof, and anigniter disposed in a recess in said fireback adjacent the upper ends ofsaid radiating elements.

3. Ina structure of the class described, the combination of a ktirebackhaving au overhang. at the top, a plurality oftubular foraminatedradiating elements disposed against the face of said reback with theirupper ends adjacent :said overhang, and' an igniter disposed on saidfireback below said overhang and adjacent the upper ends of saidradiating elements. y

In witness whereof,I have hereunto set my hand and seal in the presenceot two witnesses.

HUBERT R. HUMJPHIR-EY.

PL. s]

